/*
 * $Id: SelfManagedPanel.java 88 2009-04-24 07:40:25Z meyer@alphatec.de $
 * 
 *
 * Copyright 2009 DeltaDesk
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package deltadesk.gui.deltagui.widget;

/**
 * SelfManagedPanel.
 * 
 * @author Andreas Meyer
 * @version $Revision: 88 $
 */
public abstract class SelfManagedPanel extends Composite {
	
	/**
	 * Add a child to the composite. Access only allowed by sub classes.
	 * 
	 * @param childWidget
	 */
	protected void addDirect(final Control childWidget) {
		super.add(childWidget);
	}

	/**
	 * @see deltadesk.gui.deltagui.widget.Composite#add(deltadesk.gui.deltagui.widget.Control)
	 */
	@Override
	public void add(final Control childWidget) {
		// Prevent changing the child widget
		throw new IllegalArgumentException("Adding not allowed.");
	}

	/**
	 * @see deltadesk.gui.deltagui.widget.Composite#remove(int)
	 */
	@Override
	public void remove(final int index) {
		// Prevent changing the child widget
		throw new IllegalArgumentException("Removing not allowed.");
	}

}
